DNA Structure and Code

A five-carbon sugar found in DNA.

• ribose

• guanine

• deoxyribose

• helicase

What is the percentage of T?

• 22%

• 11%

• 28%

• 50%

Which organelle is DNA usually found in?

• cell membrane

• vacuole

• chloroplast

• nucleus

The structure of DNA is a twisted ladder shape called a _________________.

• helix

• single helix

• double helix

• triple helix

The two sides of the DNA ladder are made up of ____________________________________________.

• sugars and phosphates

• traits and characteristics

• DNA and RNA

When replication is complete, there are two _____________ DNA modules.

• identical

• different

• similar

______________ always pairs with thymine.

• Cytosine

• Guanine

• Adenine

Mutations are mistakes that become part of ___________________.

• history

• genetic code

• proteins

Tags

NGSS.HS-LS3-2

Cytosine always pairs with __________________.

• cytosine

• thymine

• guanine

• adenine

In a(n) ____________________ mutation, an extra base is added.

• substitution

• insertion

• deletion

Tags

NGSS.HS-LS3-2